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Finding the Fourth Proportional to 2,043.54, 3,065.73 and 656.79

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Solution

The fourth proportional to 2,043.54, 3,065.73 and 656.79 is: 985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.54 : 3,065.73 = 656.79 : x
  2. Step 2: Convert to fraction form
    2,043.54/3,065.73 = 656.79/x
  3. Step 3: Cross multiply
    2,043.54x = 3,065.73 × 656.79
  4. Step 4: Simplify right side
    2,043.54x = 2,013,540.81
  5. Step 5: Solve for x
    x = 2,013,540.81/2,043.54
  6. Step 6: Final answer
    x = 985.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.